4th and 5th lock out 100% of the time - 8th Generation Honda Civic Forum
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Old 11-26-2012, 06:55 PM   #1 (permalink)
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4th and 5th lock out 100% of the time

Ok so I'm making the power, able to put it to the ground but now I'm not able to shift at high rpms, would the CMC fix this issue at all? Or what do I need to do to make this a smooth shift. I have a 6 puck competition stg 4 if it helps

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Old 11-26-2012, 06:58 PM   #2 (permalink)
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Do low Rpms in the same gear grind or anything? Have you tried to adjust your stock CMC all the way out?
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Old 11-26-2012, 07:34 PM   #3 (permalink)
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Nah shifting at anything below 7k in 4th and 5th works fine, I haven't touched anything at all so maybe adjusting it will help?

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Old 11-26-2012, 07:38 PM   #4 (permalink)
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shift at 7k from now on?

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Old 11-26-2012, 07:40 PM   #5 (permalink)
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id adjust the cmc to see if that helps or makes it worse then you can judge it
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Old 11-26-2012, 07:56 PM   #6 (permalink)
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Adjust it or buy the hybrid CMC. The hybrid requires adjustment too. Have you ever adjusted your CMC and or changed the fluid in the clutch system?
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Old 11-26-2012, 07:59 PM   #7 (permalink)
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changing the fluid wouldnt do anything. now if he was loosing fluid thats a diff story because he would be losing pedal pressure
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Old 11-26-2012, 09:45 PM   #8 (permalink)
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So I should shift at 7k instead of 8600 on the track? Sounds like a great idea. I'm thinking a twin plate clutch and a em1 cmc will fix the issue. I haven't touched the stock master at all so ill fiddle with it first.

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Old 11-26-2012, 10:32 PM   #9 (permalink)
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Quote:
Originally Posted by 06si_callhervictoria View Post
So I should shift at 7k instead of 8600 on the track? Sounds like a great idea. I'm thinking a twin plate clutch and a em1 cmc will fix the issue. I haven't touched the stock master at all so ill fiddle with it first.

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That person was joking lol

A twin disk clutch will 100% change absolutly nothing unless they adjust your CMC, your issue isn't a clutch issue. If anything it would be TOB, and if it is only a high RPM its not that either. Its a sychnro or CMC issue.

Step one is this:
http://www.8thcivic.com/forums/trans...ch-adjust.html

If that helps but doesn't remove the issue get a new CMC, if it dosen't help at all, id still get a CMC as it rather cheap and a good mod. If your still having issues your sychcro's may be on their way out.
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Old 11-27-2012, 05:58 AM   #10 (permalink)
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Are you getting a noticeable clicking sound when shifting into 4th and 5th vs the other gears? I had this issue in my 3rd and 4th and ended up being a bent shifter fork. Works good now but I still get a bad 4th gear grind at rev limit.

Not to steal your thread, but while on topic, a CMC upgrade may help my 4th gear issue? My 2nd and 3rd gear isn't much a issue anymore when a pay attention to the shifting method and rpms. But 4th gear gets me everytime.
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Old 11-27-2012, 07:01 AM   #11 (permalink)
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If a gear grinds every time you shift that means the synchro is shot and the teeth on the gear are most likely ground down a bit causing the grind every time on engagement.
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Old 11-27-2012, 09:27 AM   #12 (permalink)
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I was told by the tranny shop that the synchros were good. While I was having the shift fork replaced, I was going have them replace the synchros. But they also told me that the shift fork didn't have a part number from Honda and they spent more time welding the break in the fork vs replacing a $65 piece....which the local Honda dealership has in stock all the time since they do go out so often in the tranny for RSX and Si.
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Old 11-27-2012, 09:43 AM   #13 (permalink)
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I was told by the tranny shop that the synchros were good. While I was having the shift fork replaced, I was going have them replace the synchros. But they also told me that the shift fork didn't have a part number from Honda and they spent more time welding the break in the fork vs replacing a $65 piece....which the local Honda dealership has in stock all the time since they do go out so often in the tranny for RSX and Si.
I could be wrong, its hard to diagnose a car via the internet. just giving my opinion, but i'm still leaning towards the actual teeth on the gear being ground if it grinds every time...that is usually the cause. If you have occasionally grinding its usually the syncro.
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Old 11-27-2012, 09:55 AM   #14 (permalink)
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I would not doubt it. Just them saying it is good so when my tranny breaks again they can get more money from me. Too bad I am suing their asses anyway. Bastards!
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Old 11-28-2012, 02:34 AM   #15 (permalink)
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Hmm well definitely what I wanted to hear, I was leaning towards the cmc anyway, thanks for the link ill definitely do that. 300wtq through the tranny probably isn't helping the syncros for sure

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Old 11-28-2012, 05:58 PM   #16 (permalink)
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As long as it's not grinding during engagement, I would imagine that your powerful engine wouldn't be stressing the synchros at all. It's the super quick engagement that is asked of the synchro that will wear it down.

But yes, grinding the gear with 300wtq will rip it to shreds.
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Old 11-28-2012, 06:01 PM   #17 (permalink)
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I think I need to look into tranny mods next before putting more power to the wheels. Make sure it will gets to the wheels without looking amateur or breaking something.
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Old 12-06-2012, 09:47 PM   #18 (permalink)
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Get a 1-4 PPG or Albins gearset and call it a day...
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